Chapter 8 Review (Addition and Subtraction)

Doubles

100

5 + 5 =

10

200

7 + 7 =

14

300

9 + 9 + 9 =

27

400

15 + 15 + 15 + 15 =

60

500

20 + 20 + 15 + 15 + 10 + 5 + 10 + 5 =

100

Doubles +1

100

6 + 5 =

11

200

9 + 8 =

17

300

10 + 11 + 12 =

33

400

15 + 16 + 17 + 18 =

66

500

20 + 21 + 22 + 23 + 24 + 25 =

135

Subtraction

100

16 - 8 =

8

200

19 - 10 =

9

300

25 - 10 - 7 =

8

400

50 - 25 - 7 - 9 =

9

500

100 - 25 - 50 - 15 - 7 =

3

Word Problems

100

Josie and Yvonne gave their teachers 10 plants each.  How many plants did the teachers receive altogether?

20 plants

200

Mark had 15 boxes of crayons.  His brother took 7 boxes of crayons to use at school.  How many boxes of crayons does Mark have left?

8 boxes of crayons

300

The teacher brought to class 30 donuts.  Aiden ate 9 donuts.  How many donuts are left in the box?

21 donuts

400

While on vacation in Hawaii, Tessa ate 10 spam musubis, Eden ate 8 spam musubis, and Anessa ate 7 spam musubis.  How many spam musubis did they eat altogether?

25 spam musubis

500

Jake had 50 pieces of orange chicken in his bowl.  Bradley had 26 pieces of orange chicken in his bowl.  Their parents told Jake to save 35 pieces of orange chicken for lunch the next day, and they told Bradley to save 14.  How many pieces of orange chicken did the boys eat for dinner altogether?

27 pieces of orange chicken